geo-ip + nginx

[Igor Sysoev]

On Fri, May 29, 2009 at 11:16:29AM -0700, Payam Chychi wrote:

> 2009/5/28 Igor Sysoev <is at rambler-co.ru>:
> > On Thu, May 28, 2009 at 08:46:13AM -0700, Payam Chychi wrote:
> >
> >> 2009/5/28 Igor Sysoev <is at rambler-co.ru>:
> >> > On Thu, May 28, 2009 at 08:21:16AM -0700, Payam Chychi wrote:
> >> >
> >> >> hey guys,
> >> >>
> >> >> anyone know the upper limits of number of acl lines for geo-ip /w
> >> >> nginx? I have a list of 7000 lines and i feel that i might be hitting
> >> >> a performance wall at 20-30mbps of request (6-9k req/sec)
> >> >> boxes im using are xeon 2.4ghz+ dual cor/dual proc + 4gig ram
> >> >
> >> > If you use geo variables, then there is no limit.
> >> > I use about 200,000 addreses.
> >> >
> >> >
> >> > --
> >> > Igor Sysoev
> >> > http://sysoev.ru/en/
> >> >
> >> >
> >>
> >> I see, so I assume you load the entire 200k list once, then refer back
> >> to it for one/or/more configs? the way i am doing it is I have 1
> >> global list that applies to all configs then I also have a 2nd list
> >> that applies to individual configs0
> >
> > We use single geo variables for geo targeting, but not for blocking.
> >
> >> 1st list drops all known back hosts (default = ddos)
> >> 2nd list allows connections only from particular sources that match
> >> the list (default = 0)
> >>
> >> ever have any issues loading multiple lists in geo with different variables?
> >
> > No issues.
> >
> >> ex:
> >>       location / {
> >>                if (  $ddos_ru = ddos ){
> >>                         return 403;
> >>                         break;
> >>                 }
> >>
> >>                if ( $geo2 = 0 ) {
> >>                         return 403;
> >>                         break;
> >>                 }
> >
> > These "break"s are useless.
> >
> > Also I prefer these way:
> >
> > geo $ddos_ru {
> >    default  1;
> >    ...      0;
> >    ...      0;
> >    ...      0;
> > }
> >
> > geo $geo2 {
> >    default  1;
> >    ...      0;
> >    ...      0;
> >    ...      0;
> > }
> >
> >       if ($ddos_ru) {
> >           return 403;
> >       }
> >
> >       if ($geo2) {
> >           return 403;
> >       }
> >
> >>
> >>          proxy_pass              http://LB_HTTP_x.x.x.x;
> >>        proxy_intercept_errors on;
> >>        proxy_cache             one;
> >>          proxy_cache_key         x.x.x.x$request_uri;
> >>          proxy_cache_valid       200  1h;
> >>        proxy_cache_valid       404 5m;
> >>          proxy_cache_use_stale   error timeout invalid_header;
> >>          }
> >>
> >>
> >> --
> >> Payam Tarverdyan Chychi
> >> Network Security Specialist / Network Engineer
> >
> > --
> > Igor Sysoev
> > http://sysoev.ru/en/
> >
> >
> 
> Hey Igor,
> 
> I can see why... loos good however, i am trying to move towards a
> master list (geo2) that has multiple different variables as it is a
> ip-->country mapping database so the suggestion wont work... i dont
> believe. I am trying to allow a setup where i can say "only allow
> connections from CA and EU" type of thing. Here is what i got:
> 
> action=deny;
> 
>  geo $geo2 {
>     default  1;
>     ...      CA;
>     ...      US;
>     ...      EU;
> 
>        }
> 
>        if ($geo2 = 'CA|EU') {
>            set $action "permit";
>       }
> 
> 
>   if ($action ~* "permit") {
>          proxy_pass              http://LB_HTTP_x.x.x.x;
>          break;
>    }
> 
>   if ($action !~ "permit") {
>         return 403;
>    }

No, do not use proxy_pass inside "if" if it's possible to configure
proxy_pass in different way.  The "return" is only directive that
works inside "if" as anyone may expect. Other have hidden agendas.

So

    if ($geo2 !~* "CA|EU") {
         return 403;
    }

    proxy_pass  http://LB_HTTP_x.x.x.x;

However, I prefer to create exact geo map with just two values - 0 and 1.


-- 
Igor Sysoev
http://sysoev.ru/en/